ht_synapse – Synapse with depression after Hill & Tononi (2005)
===============================================================
Description
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This synapse implements the depression model described in [1]_, p 1678.
Synaptic dynamics are given by
.. math::
P'(t) = ( 1 - P ) / \tau_P \\
P(T+) = (1 - \delta_P) P(T-) \text{ for T : time of a spike } \\
P(t=0) = 1
:math:`w(t) = w_{max} \cdot P(t)` is the resulting synaptic weight
For implementation details see:
`HillTononi_model <../model_details/HillTononiModels.ipynb>`_
.. warning::
This synaptic plasticity rule does not take
:ref:`precise spike timing ` into
account. When calculating the weight update, the precise spike time part
of the timestamp is ignored.
Parameters
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The following parameters can be set in the status dictionary:
======== ====== =========================================================
tau_P ms Synaptic vesicle pool recovery time constant
delta_P real Fractional change in vesicle pool on incoming spikes
(unitless)
P real Current size of the vesicle pool [unitless, 0 <= P <= 1]
======== ====== =========================================================
References
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.. [1] Hill S, Tononi G (2005). Modeling sleep and wakefulness in the
thalamocortical system. Journal of Neurophysiology. 93:1671-1698.
DOI: https://doi.org/10.1152/jn.00915.2004
Transmits
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SpikeEvent
See also
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:doc:`Synapse `, :doc:`Hill-Tononi Plasticity `